Wang, Lingjiao

Wang Lingjiao was a former maid of Wen Chao's principal wife and later his lover. Despite only achieving her status by engaging in sexual activities with Wen Chao, she was arrogant and pompous.

[Spoiler] She also guarded her status as Wen Chao's favorite, and did her best to eliminate any competition, like volunteering Mianmian as a sacrifice when she witnessed Wen Chao flirting with her. She was later psychologically tortured and murdered by Wei Wuxian. [/Spoiler]

(Source: Wikipedia)